Table 3.

Variables included in final model. Variables with positive beta (ß) estimates positively predict MSB, variables with negative beta estimates negatively predict MSB. Categorical variables all have a “referent” variable, the variable to which other levels of the variable are compared.

Variable	ß Estimate (SE)	Lower 95% CI	Upper 95% CI	p-value
Model: Motor stereotypic behavior (MSB) ~ rearing, sex, age, origin, response to novel object, current pair, enrichment device
Rearing
Corral	–	–	–	–
Shelter	0.55 (0.23)	0.10	1.00	< 0.05
Indoor-group	1.60 (0.24)	1.12	2.07	< 0.001
Indoor-mother	2.68 (0.18)	2.32	3.04	< 0.001
Nursery	2.62 (0.23)	2.16	3.08	< 0.001
Mix	1.22 (0.22)	0.80	1.65	< 0.001
Acquired	0.45 (0.19)	0.08	0.81	< 0.05
Sex
Female	–	–	–	–
Male	0.23 (0.13)	−0.03	0.48	< 0.10
Age in years (linear predictor)	0.05 (0.04)	−0.03	0.12	0.23
Age in years (quadratic predictor)	−0.004 (.002)	−0.01	0.00	< 0.05
Origin
Indian	–	–	–	–
Chinese	0.40 (0.17)	0.07	0.73	< 0.05
Response to novel object				–
Inhibited	–	–	–	–
Moderate	0.82 (0.25)	0.34	1.30	< 0.001
Bold	1.00 (0.21)	0.60	1.41	< 0.001
Enrichment device
Absent	–	–	–	–
Present	−0.17 (0.08)	−0.33	0.01	< 0.05
Pairing status
Full contact pair housed	–	–	–	–
Protected contact housed	0.53 (0.15)	0.23	0.83	< 0.001
Single housed	0.67 (0.11)	0.46	0.89	< 0.001